;; This file is part of eris-cl.
;; Copyright (C) 2022 Piotr Szarmański

;; eris-cl is free software: you can redistribute it and/or modify it under the
;; terms of the GNU Lesser General Public License as published by the Free
;; Software Foundation, either version 3 of the License, or (at your option) any
;; later version.

;; eris-cl is distributed in the hope that it will be useful, but WITHOUT ANY
;; WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
;; A PARTICULAR PURPOSE. See the GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License along with
;; eris-cl. If not, see <https://www.gnu.org/licenses/>.

(in-package :eris/test)

(def-suite* backend-tests :in eris-tests)

(defmacro test-hash-backend (array block-size &optional (secret null-secret))
  `(let ((backend (make-instance 'hash-backend))
         (array ,array))
     (is (equalp (alexandria:read-stream-content-into-byte-vector
                  (fetch-data
                   (store-data array backend :block-size ,block-size :secret ,secret) backend))
                 array))))

(test simple-hash-backend-tests
  (test-hash-backend (make-octets 1023 :element 1) 1kib)
  (test-hash-backend (make-octets 1025 :element 2) 1kib)
  (test-hash-backend (make-octets 16383 :element 3) 1kib)
  (test-hash-backend (make-octets 16384 :element 4) 1kib)
  (test-hash-backend (make-octets 1 :element 5) 32kib)
  (test-hash-backend (make-octets 16834 :element 5) 32kib)
  (test-hash-backend (make-octets 96000 :element 5) 32kib))

(defun make-temporary-dir ()
  (let* ((tmpdir (uiop:temporary-directory))
         (tmp-tmpdir (make-pathname :directory (serapeum:append1
                                     (pathname-directory tmpdir)
                                     (ironclad:byte-array-to-hex-string (ironclad:random-data 10)))
                         :defaults tmpdir)))
    (ensure-directories-exist tmp-tmpdir)
    tmp-tmpdir))

(defmacro test-file-backend (array &optional (secret null-secret))
  `(let ((tmpdir (make-temporary-dir)))
     (unwind-protect
          (let* ((backend (make-instance 'file-backend :directory tmpdir))
                 (array ,array))
            (is (equalp (alexandria:read-stream-content-into-byte-vector
                         (fetch-data
                          (store-data array backend :secret ,secret) backend))
                        array)))
       (uiop:delete-directory-tree tmpdir :validate t))))

(test simple-file-backend-tests
  (test-file-backend (make-octets 1023 :element 1))
  (test-file-backend (make-octets 1025 :element 2))
  (test-file-backend (make-octets 16383 :element 3))
  (test-file-backend (make-octets 16384 :element 4))
  (test-file-backend (make-octets 1 :element 5))
  (test-file-backend (make-octets 16834 :element 5))
  (test-file-backend (make-octets 96000 :element 5)))